FILE - In this June 20, 2019, file photo released by China's Xinhua News Agency, visiting Chinese President Xi Jinping, left, and North Korean leader Kim Jong Un wave from an open top limousine as they travel along a street in Pyongyang, North Korea. China appears to be keeping its distance as Russia and North Korea move closer to each other with a new defense pact that could tilt the balance of power between the three authoritarian states.(Ju Peng/Xinhua via AP, File)